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7. [Application of various genetic techniques for the diagnosis of Prader-Willi syndrome].

Author

Huang W, Li S, Luo H, Wen X, Lin C, Chen S, Zhao L, and Xiao G

Subjects
Chromosomes, Human, Pair 15 genetics, Genomic Imprinting, Humans, Infant, Male, Microarray Analysis, Polymerase Chain Reaction, Uniparental Disomy diagnosis, Uniparental Disomy genetics, Genetic Testing methods, Prader-Willi Syndrome diagnosis, Prader-Willi Syndrome genetics
Abstract

Objective: To discuss the advantages and technical limitations of various molecular genetic techniques in the diagnosis of two infants featuring all-round developmental retardation., Methods: The two patients were initially screened by using chromosomal microarray analysis (CMA). For patient 1, his parents were also subjected to CMA analysis, and the data was analyzed by using ChAS and UPD-tool software. For patient 2, methylation-specific PCR (MS-PCR) was carried out., Results: Patient 1 was diagnosed with maternal uniparental disomy (UPD) type Prader-Willi syndrome (PWS) by CMA and UPD-tool family analysis. His chromosomes 15 were of maternal UPD with homology/heterology. Patient 2 was diagnosed with deletion type PWS by combined CMA and MS-PCR., Conclusion: Correct selection of laboratory methods based on the advantages and limitations of various molecular techniques can help with diagnosis of genomic imprinting disorders and enable better treatment and prognosis through early intervention.

Published
2020
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